3.7 Load Case Manager (load-case-manager)
Purpose: Envelope multiple load cases (axial, moment, shear) and evaluate combined stress on a rectangular section.
Method: Closed-form envelope + von Mises-style combination (similar to combined-loading).
Inputs: case list, section width/height, yield strength.
Outputs: envelope forces, stress components, safety factor, design status.
Design codes: Indicative envelope utilization.
UI: Legacy layout; extracted monolith; unit profile present.
Gaps: Orchestration layer only — no links to external FEA; rectangular section; simplified combination formula.